Question about MTX RT202 Car Audio Amplifier

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No power Amp worked fine, then I disconnected all wiring to temporarily remove from my car. When I reconnected, the red light came on, but no sound. Then I realized that the ground was connected to the remote and remote to the ground. After I re-connected them correctly, there is no red light and no sound. All fuses are in tact.

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You might have toasted you amp, take it to a car audio shop and ask them to test it for you.

Posted on Aug 19, 2008

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2 Answers

Amp worked fine one day and the next day i get nothing. the red light on the side is on but i dont get any sound. i took the subs that were wired on that amp and wired them on the other punch 800 i have...


did you check all fuses on amp and coming from battery power wire? also check the ground and rca cables connecting to the unit and make sure the remote wire (small blue wire) didnt come lose thats usualy a sign for the red light

Mar 26, 2011 | Rockford Fosgate Punch 800a2 Car Audio...

1 Answer

Hooked the damn thing up power my subs wonderfully for that evening, and all day today, got in this evening and nothing, checked the amp and red light, ok, fine, checked the manual, says the light protects...


probably something corssed in your speaker wiring. be sure that you did not exceed the ohmage capabilities of the amp, and that no speaker wires are crossed, or shorting out on the frame. if you have too many speakers hooked up, that can reduce the ohmage, and your not supposed to go below 2 ohms -per channel, or 4 ohms bridged mono.

Mar 13, 2011 | Pyle PLA2200 Car Audio Amplifier

2 Answers

My subs/amp are not working


when you car is running, it charges the battery somewhat. So the voltage problem is not a problem. The red light means the amp is going into ''Protect Mode". This usually happens when something is wrong with the amp. Usually the amp is getting hot. Check all of you connectiong and check the final impedance of the subs. Make sure the amp can handle the impedance of the subs. If you need anymore help, message me.

Feb 12, 2010 | Kenwood Excelon KAC-X621 Car Audio...

1 Answer

My kenwood amp wont turn on all the way i just hooked it up to my truck. the blue lights and the fan come on but the red light wont come on to power my subs


REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE AMPLIFIER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL DOES NOT POWER UP, VERIFY THAT THE POSITIVE AND ESPECIALLY THE GROUND CONNECTIONS, ALONG WITH THE REMOTE CONNECTIONS ARE 100%, THEN TRY AGAIN. IF STILL NOT POWERED UP, MEASURE THE REMOTE WIRE VOLTAGE TO INSURE THAT IT IS NOT LOWER THAN 11 VOLTS. IF YOU CANNOT MEASURE IT, THEN DISCONNECT THE REMOTE LEAD FROM THE AMPLIFIER AND TEMPORARILY INSTALL A JUMPER WIRE FROM THE POSITIVE POWER TERMINAL TO THE AMPS REMOTE TERMINAL WHICH WILL FORCE IT TO TURN ON. IF IS STILL DOES NOT POWER UP, THEN IT WILL HAVE TO BE SERVICED. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V

Nov 20, 2009 | Kenwood KAC-7203 Car Amp

1 Answer

Amp not working to power sub woofer


remote wire/ fuse possible? have you checked?
traced all voltage?take and disconnect remote wire from amp and make short wire from remote to 12v if green light works then u may have bad remote wire or blown fuse.

Oct 05, 2009 | Kicker ZX10001 Car Audio Amplifier

1 Answer

Amp flashes red light only, no other power seems to work on amp


Hello markrich78,

First determine if it is the amp or the wiring that is causing the problem.

Disconnect all wiring except ground, power and remote turn-on and see if the amp powers up properly. If it doesn't, the amp itself is defective and needs professional repair or replacement. If the amp powers up OK with just ground, power and remote turn-on connected, check all of your other wiring for shorts and grounds, or reconnect them one at a time.

Hope this helps.

Sep 19, 2009 | Kenwood Car Amplifiers

3 Answers

Red Power Protector light


Hi, the only way i can see the amp resets the stereo is that power is dropping. The amp should have its own wires directly to power/battery so as to not affect anything else.

On the protect, try to disconnet all the speakers, make sure the power is OK. If it appears to work, the there could be a problem with speakers/cables. Try a different speaker to see if it works. If the problem continues with speakers off, a different speaker etc, then there is a problem with the amp. Hope that helps

Jul 21, 2009 | Sony XM-2100GTX Car Audio Amplifier

1 Answer

No sound from amp


THIS IS AN EASY FIX. DISCONNECT THE POWER WIRE FROM BATTERY. REMOVE THE GROUND WIRE FROM THE CARS BODY. SAND ALL THE PAINT AWAY FROM THAT AREA. WIPE IT CLEAN WITH A DRY CLOTH AND HOOK THE GROUND BACK UP. THEN RECONNECT THE POWER WIRE AND THAT SHOULD FIX IT. IF NOT THEN TURN DOWN UR GAIN CAUSE THE AMP IS OVER HEATING

Feb 19, 2009 | Pioneer GM-5200T Car Audio Amplifier

1 Answer

My sony xplod 1000w xm-1652z doesnt work anymore


First off, according to the manual, the protect light should be green. That's normal operation. If it is red, that's a problem.

If it does go red, disconnect all of the wiring to the amp except the +12V and ground. Short the remote connection to the +12V to force the amp on. If the protect light still lights red, the issue is inside the amp and will need repair. If the issue goes away, try reconnecting one wire at a time until the protect light goes red again.

Mar 23, 2008 | Sony Xplod XM-554ZR Car Audio Amplifier

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